Olicana

Bishop Nick Olicana Real Ale / Bitter - 3.9%

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Oatmeal Stout

Bishop's Stortford Oatmeal Stout Real Ale / Stout - 4.9%

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Old Ale

Bishop's Stortford Old Ale Real Ale / Dark/Old Ale - 5.2%

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Old Dirt Road

Black Bar Old Dirt Road Real Ale / Strong - 5.8%

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Original

Black Cat Original Real Ale / Best Bitter - 4.2%

Black Cat Brewery

Oatmeal

Blackedge Oatmeal Real Ale / Stout - 6.5%

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Oatmeal Espresso

Blackedge Oatmeal Espresso Real Ale / Stout - 6.0%

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Oregon

Blackedge Oregon Real Ale / Bitter - 3.5%

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Owl and the Pussycat

Black Flag Owl and the Pussycat Real Ale / Stout - 7.0%

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Old Habit

Blackfriars Old Habit Real Ale / Strong - 5.6%

Blackfriars Brewery

Orbitter

Black Hole Orbitter Real Ale / Golden - 4.1%

Black Hole Brewery

Obliging Blonde

Black Horse Obliging Blonde Real Ale / Golden - 4.3%

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Occupy My Brain

Black Iris Occupy My Brain Real Ale / Golden - 4.2%

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Orange Gobblin

Black Iris Orange Gobblin Real Ale / Premium - 4.8%

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Orange Saison

Black Iris Orange Saison Real Ale / Best Bitter - 4.0%

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Oatmeal Stout Morangie Edition

Black Isle Oatmeal Stout Morangie Edition Real Ale / Stout - 10.4%

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Organic Wheat Beer

Black Isle Organic Wheat Beer Real Ale / Wheat - 4.5%

Black Isle Brewing

One Eyed Jack

Blackjack One Eyed Jack Real Ale / Porter - 6.0%

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Off the Top IPA

Black Sheep Off the Top IPA Real Ale / Golden - 4.0%

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Olicana Gold

Black Tor Olicana Gold Real Ale / Golden - 4.7%

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Oor Bonnie

Blue Ball Oor Bonnie Real Ale / Best Bitter - 4.3%

Blue Ball Brewery

Obelus

Blue Bee Obelus Real Ale / Golden - 4.5%

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Oceanic Red

Blue Bee Oceanic Red Real Ale / Best Bitter - 4.7%

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Octothorpe

Blue Bee Octothorpe Real Ale / Premium - 4.8%

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Oh Good Pale

Blue Bee Oh Good Pale Real Ale / Bitter - 3.8%

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Olicana Gold

Blue Bee Olicana Gold Real Ale / Golden - 3.9%

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Old Comfort

Blue Bell Old Comfort Real Ale / Strong - 5.0%

Blue Bell Brewery

Old Fashioned

Blue Bell Old Fashioned Real Ale / Premium - 4.8%

Blue Bell Brewery

Old Gold

Blue Bell Old Gold Real Ale / Best Bitter - 4.5%

Blue Bell Brewery

Old Honesty

Blue Bell Old Honesty Real Ale / Best Bitter - 4.1%

Blue Bell Brewery

Oak Aged Silverback

Blue Monkey Oak Aged Silverback Real Ale / Strong - 13.0%

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Old Fashioned Wild Turkey BA

Blue Monkey Old Fashioned Wild Turkey BA Real Ale / Stout - 13.0%

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Orang-a-tang

Blue Monkey Orang-a-tang Real Ale / Strong - 5.4%

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Organ Grinder

Blue Monkey Organ Grinder Real Ale / Stout - 4.9%

Blue Monkey Brewery

Original

Blue Monkey Original Real Ale / Bitter - 3.6%

Blue Monkey Brewery

Owd Nip

Bluestone Owd Nip Real Ale / Barley Wine - 8.5%

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Ogham

Bluestone Ogham Real Ale / Stout - 4.1%

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Outcrop

Bluestone Outcrop Real Ale / Golden - 4.6%

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Old Horny

Blythe Old Horny Real Ale / Best Bitter - 4.6%

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Oat Mill Stout

Bollington Oat Mill Stout Real Ale / Stout - 5.0%

Bollington Brewing